I recently migrated this and my other blog to Hexo which is a very fast static blogging framework built on node.js. As when I used Octopress, this blog is still hosted from an AWS S3 bucket. However the deployers that I tried with Hexo failed because of dependencies that were incompatible with the OS X version I was running. Not being a node.js expert, and having no time to delve into node.js internals, I wrote a new deployer:

hexo-deployer-awstransmit

It relies on Transmit to upload the public directory of a Hexo baked blog to the S3 bucket that hosts the site. You can find it on npm and Github.